Street Savage

Heavy metal, rusty junkyard scrap, and a bad attitude all wrapped into one package. The Street Savage is one mean mother****er who specializes in launching as much lead as possible at any stupid sonnofa***** that looks at you crosseyed. Preferably from a monster truck.
More cunning than one might give them credit for, the Street Savage is adept at attaching all manner of brutal instruments to their weapons. Does this gatling gun need a chainsaw? Should I mount a rocket launcher on my flamethrower? When I die, should I go to hell with friends? The answer is always, “YES!”

Walking Tank

Starting when you choose this path at 3rd level, you can
leverage your ferocious strength and rage into your firearms.
You gain the following benefits:

• When you attack with a two-handed firearm, you can use
  your Strength modifier instead of your Dexterity modifier
  for the attack roll.
• Where your Barbarian features apply to melee weapon
  attacks, they now also apply to ranged weapon attacks
  with two-handed firearms.

Savage Accessories

SAVAGE ACCESSORIES
At 3rd level, you can modify your firearms to be more useful
in brutal combat. You gain proficiency with tinker’s tools and
land or water vehicles (your choice). If you already have
either of these proficiencies, you instead gain proficiency
with one other type of artisan's tools of your choice.
Over the course of a long rest, you can add one of the
following savage accessories to a two-handed firearm.
Belt Feed. If this firearm lacks the blast property, it
ignores the reload property. You can swap ammo types
loaded into this firearm on your turn (no action required).
Blast Shield. While you are holding this weapon you are
not affected by the blast property on weapons and you have
resistance to thunder damage.
Bola Launcher. As an attack with this firearm, you can
launch a bola at a creature. A bola functions similarly to a
net, except that it is range 20/60, and you can make your
normal number of attacks. You can reload this launcher over
the course of a short or long rest.
Chainsaw. This weapon also functions as a chainsaw for
melee attack purposes, including opportunity attacks, except
that it does not require a pull start in order to be used.
Dead Man’s Switch. You can attach an explosive that
requires an action to use to this firearm. If you are holding
the firearm when you are reduced to 0 hit points, you can
activate the explosive at a point within your space. You can
replace the explosive over the course of a short or long rest.
Grapple Harpoon. This weapon can launch a harpoon at
a target. It functions similarly to a spear gun except that it is
range 30/60. When you hit a creature with a harpoon from
this weapon, and the target is a creature your size or smaller,
you can make a contested Strength (Athletics) check to pull it
next to you and grapple it with a free hand. If there is no
open adjacent space, then the creature stops in the nearest
available open space and is not grappled. Alternatively, if the
target is larger than you, you can choose to be pulled to it.
However, this does not grapple it.
Under-Barrel Rocket Launcher. This weapon also
functions as a rocket launcher. This accessory is not
compatible with other under-barrel accessories.
A firearm can have only 1 savage accessory, and you can
maintain a number of savage accessories equal to your Rage
Damage. If you attempt to add a savage accessory beyond
your limit, you can choose which of your current savage
accessories will break and become unusable.
If a creature other than you attempts to use one of your
savage accessories or the firearm it is attached to, the attempt
will fail and the firearm will malfunction, causing the
creature to take 2d4 slashing or piercing damage (your
choice).

Land Vehicles

Proficiency in Land Vehicles

Other Artisan Tool

Other Artisan Tool if you already have proficiency in land or water vehicles

Water Vehicles

Proficiency in water vehicles

Road Rage

At 6th level, you become a fierce road warrior who gives new
meaning to the term muscle car. If you enter a rage while you
are driving a vehicle, the benefits of your rage also apply to
your vehicle until the rage ends.
Your rage doesn’t end early if your vehicle has attacked a
hostile creature or taken damage since your last turn. While
you are driving a vehicle and raging, the vehicle can make
ranged attacks using your Strength modifier, instead of
Dexterity, for the attack rolls.
Additionally, you can control a vehicle without having a
free hand for the vehicle’s controls.

Blaze of Glory

At 10th level, when a vehicle you are driving is reduced to 0
hit points, you can use a reaction to have the vehicle move up
to its movement speed. This movement doesn’t provoke
opportunity attacks. If a vehicle would explode when it is
reduced to 0 hit points, the explosion occurs immediately
after this movement.

Additionally, you gain resistance to fire damage and you
take no damage from explosion effects caused by a vehicle or
any other object reaching 0 hit points.

Death Machine

DEATH MACHINE
Beginning at 14th level, your adrenaline fueled rage allows
you to maintain an iron grip on two weapons of mass
destruction simultaneously. While you’re raging, you can
ignore the two-handed property on all firearms. As a bonus
action, you can engage in two-weapon fighting with any
firearm.
Additionally, you can draw or stow two firearms when you
would normally be able to draw or stow only one.